20621940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7993}}^1$

素因数の和:8048

約数の個数: 48

約数和(自身を含む): 59091648

約数和(自身を除く): 38469708

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 7993, 15986, 23979, 31972, 39965, 47958, 79930, 95916, 119895, 159860, 239790, 343699, 479580, 687398, 1031097, 1374796, 1718495, 2062194, 3436990, 4124388, 5155485, 6873980, 10310970, 20621940]

約数ペア:

[(1, 20621940), (2, 10310970), (3, 6873980), (4, 5155485), (5, 4124388), (6, 3436990), (10, 2062194), (12, 1718495), (15, 1374796), (20, 1031097), (30, 687398), (43, 479580), (60, 343699), (86, 239790), (129, 159860), (172, 119895), (215, 95916), (258, 79930), (430, 47958), (516, 39965), (645, 31972), (860, 23979), (1290, 15986), (2580, 7993)]